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Do you have an unlock in your unit: the old 2014.10 one (.gma+.unl) ? Try to delete it (backup it first).

With the 430N I have no access to the files. Everything is done blindly with a USB stick. Basically the way this works is I setup a USB stick with a Garmin directory, plug it in the front of the unit and it will try to run whatever is on there. I have no access to the files/folders on the internal hard drive.

Download the .img file you want. Save them to a USB thumb drive in a folder named Garmin as gmapsupp.img.
You do need to use Jetmouse to generate a code based on your map and unit ID to enter when it begins the update.
So download Jetmouse and create the key
It should load automatically.

Another idea: Is may be the map too big for your unit ? Try to load just US .img

[Only registered and activated users can see links. ][Only registered and activated users can see links. ]

[Only registered and activated users can see links. ]You have to navigate to get to the good.

Another idea: Is may be the map too big for your unit ? Try to load just US .img

No go on that, tried Pedro's lower 48, gave me the same old "Device not compatible". I can't get it to do anything now, even tried the 2014.10 maps I got to install before and same message. Don't think I'm getting anywhere without access to the drive which I'm guessing will only happen by physically removing it. Is there firmware updates or any software updates anyone knows of? All it says under system information is Melco - Software Version 3.00

Nup, not yet. Use the full 2014.10 CX but deselect CN 2014.20 [and read the note about 3d buildings image if your unit is capable at the base of Post #1 here: [Only registered and activated users can see links. ].

.... Since I have a portable MapSource.exe, can I just pull "City Navigator North America NT 2014.20.gmap" folder from the zip file instead of installing? thx

There is never an absolute need to run the installer for MS/BC/MI even for fixed versions. Just put the gmap folder in the correct directory for your Windows OS and the programs will find it. You just won't have the registry keys that's all. NOTE: Don't use MS for shortcut or complete images for NA, there may be navigation errors result. Use only MI for that.

'Thanking Posts' are banned. To thank someone, and/or to see hidden links and content, use the [Only registered and activated users can see links. ] button below left of the helpful post then refresh your browser [F5 key]. 'Thanking Posts' are banned.Please don't spam. Posts serving no purpose other than to thank or to ask about hidden links are trashed or deleted, it's GPSPower's policy. Please don't spam.[Only registered and activated users can see links. ] should make their first post as a new Intro Thread in [Only registered and activated users can see links. ].

The only link for an image in Post #1 is for the 3D building map, gmap3d.img. The only detail map dl available in P#1 is for the gmap folder which of course is quite a bit larger than the image. 2,756,951,323 bytes compared to 2,025,357,312 bytes [~1.88626 GB or 1931.53125 MB].

To answer your question, yes the gmap3d.img will work with the matching corresponding version NA detail map as long as it's unlocked too and regardless of the source of either.

'Thanking Posts' are banned. To thank someone, and/or to see hidden links and content, use the [Only registered and activated users can see links. ] button below left of the helpful post then refresh your browser [F5 key]. 'Thanking Posts' are banned.Please don't spam. Posts serving no purpose other than to thank or to ask about hidden links are trashed or deleted, it's GPSPower's policy. Please don't spam.[Only registered and activated users can see links. ] should make their first post as a new Intro Thread in [Only registered and activated users can see links. ].

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